无触角滚刀刀顶圆角半径的最佳选择  

The Best Choice of Non-feeler Hob Tip Fllet Radius

作　　者：赵向飞[1,2] 刘红旗[1] 张杰[2] 张敬彩[1] 孙刚[1] 

机构地区：[1]机械科学研究总院,北京100044 [2]北京科技大学,北京100083

出　　处：《机械传动》2013年第3期27-30,共4页Journal of Mechanical Transmission

基　　金：国家科技支撑计划项目(2012BAH32F05)

摘　　要：渐开线齿轮齿根过渡曲线是影响齿根弯曲应力的重要因素,该过渡曲线由滚刀刀顶圆角展成。为提高齿轮弯曲强度,采用不同半径的圆弧描述该圆角,并推导了最佳圆角半径的计算公式。运用ANSYS的APDL语言对不同半径圆角滚刀加工的齿轮进行了参数化有限元建模,并通过ANSYS/FE-SAFE软件对特定载荷下齿根弯曲疲劳进行了分析。结果表明,选择最佳的圆角半径可使齿根应力减小4.9%,弯曲强度提高43%。The fillet curve of involute gears processed by hob tip fillet is the important factor which affects the root bending stress. The goal is to improve tooth bending strength by using arcs with different radius to describe the hob tip curve and the formula for computing the best fillet radius is derived. Parametric finite element model of gear is founded by APDL and bending strength under specific load is analyzed by ANSYS/FE - SAFE software. The results show that bending stress is reduced by 4.9 % and bending strength is increased by 43 % by choosing the best tip fillet hob.

关 键 词：渐开线齿轮 齿根过渡曲线 弯曲应力 滚刀刀顶圆角 ANSYS/FE-SAFE 

分 类 号：TH132.41[机械工程—机械制造及自动化]